Boiler-feeder.



A. JUNGBR.

BOILER FEEDER.

APPLICATION nun um. 28, 1909.

Patented July 19, 1910.

rm: Namns PETERS cm. WASHINGTON, n. c.

AUGUST J'tl'NG-ER, OF METZ, GERMANY.

BOILER-FEEDER.

Specification of Letters Patent.

Application filed January 28, 1909.

Patented July 19, 1910. Serial No. 474,761.

To all whom it may concern:

Be it known that I, AUGUsT JI'iNGnR, consulting engineer, a subject of the King of Prussia, German Emperor, and a resident of the city of Metz, Lorraine, German Empire, have invented new and useful Improvements in Boiler-Feeders, of which the following is a specification.

This invention relates to an automatic apparatus for feeding boilers, for maintaining the level of the water constantly at a predetermined height by employing a float within a special closed chamber inside or outside the boiler to open or close a steam pipe through which the steam for driving the feed water pump or injector passes. If the water falls in the boiler below the proper level the float, which is connected in some suitable way with the valve of the steam pipe, opens the said valve and the feeding apparatus is put in action. When the water rises to the proper level the float rises also and closes the steam valve.

My present invention belongs to this known kind of automatic feeding apparatus, but it avoids a very important defect of the apparatuses heretofore in use, which has to a large extent prevented their introduction and which consists chiefly in that the guidance of the closed float heretofore employed leaves much to be desired, because heretofore stuffing boxes or similar constructions have been used, whereby there has always been a considerable loss of useful effect of the float in consequence of friction. In fact quick action of the automatic feeder depends on the float being as light as possible and on its acting on equilibrium valves.

To obviate the above mentioned defect I employ an open float the longbottle shaped neck of which surrounds the steam pipe and the valves and is guided by the former. The float has the shape of an ordinary or Erlenmeyer flask and a cross partition inside which can either directly close the steam pipe or actuate the valve preferably an equilibrium valve thereof. By this shape of the float only dry steam escapes through the valve and the float is not influenced by pressure and may therefore be very light.

Instead of opening and closing a steam pipe the float may be used to open and close a water pipe. When several steam boilers are fed by one pump this opening of the valve may be effected by means of the float, and the closing by means of the water pressure of the pump. The float and the valve are then contained within the same casing or chamber.

In the accompanying drawings are shown various ways of carrying out the invention.

The figure is a vertical section of an automatic boiler feeding apparatus with bottle shaped open float.

The chamber G is so connected with the boiler by the pipes (Z and to that the water level a in the chamber corresponds with that in the boiler. The steam pipe (I is led through a stufli'ng-box, threaded collar or the like Z) into the interior of the chamber G.

At the lower end of the pipe (1 is the valve casing g in which are the two equilibrium valves '0 and '0 The chamber aa in said valve casing affords entrance for steam into pipe at when the valves are open; chamber aa being substantially ring-shaped. The float s is made in any suitable way, but for the sake of lightness preferably in two parts, between which is placed a cross partition g but which may be fixed, in a float made of a single piece, in any other suitable way. The cross partition 9 itself is furnished with openings 0 for diminishing the wei ht of the float as much as possible. On the falling of the float, the equilibrium valves 0 and o to which the partition 9 is connected, are opened, allowing the steam to pass then into the steam pipe a and closed again when the float rises. Y

The float 8 may be guided by the wall of the chamber G, the shape of which then corresponds to that of the float, or by a perforated ring 1 fixed in the interior of the neck it of the float, which ring slides along the steam pipe a. It will be obvious that the outer guide may be dispensed with, but in that case two rings '2" are arranged in the neck 72,. ring 20 or on the bottom of the chamber. The float may also on falling be supported by a ring 0" on the pipe (1.

The water level of the boiler depends on the length of the steam pipe at within the casing g. In order to be able to vary the predetermined height of water inside the boiler, said pipe a is movable lengthwise and is fixed in the position corresponding to the required water-level by the stuffing box I).

I claim:

1. In an automatic boiler feeding apparatus, the combination of an open float normally displacing a substantially constant and When the float falls it hes on the predetermined volume of its supporting liquid, a steam pipe and a controlling valve therefor both inclosed by said float, said float having internal guiding rings operating to permit of its unrestrained movement along a predetermined path, the controlling valve aforesaid being actuated by the movement of said float, substantially as described.

2. In an automatic boiler feeding apparatus, the combination of an open float normally displacing a substantially constant and predetermined volume of its supporting liquid, a steam pipe and a controlling valve therefor both inclosed by said float, said float having guiding devices operating to permit of its movement along a predetermined path, the controlling valve aforesaid being actuated by the movement of said float, substantially as described.

3. In an automatic boiler feeding apparatus, the combination of an open float normally displacing a substantially constant and predetermined volume of its supporting liquid, a steam pipe and a controlling equilibrium valve therefor both inclosed by said float, said float having guiding devices oper ating to permit of its movement along a pre determined path, the controlling valve aforesaid being actuated by the movement of said float, substantially as described.

4. In an automatic boiler feeding apparatus, the combination of a casing, tubes connecting said casing With the boiler, an open float normally displacing a substantially constant and predetermined volume of its supporting liquid, a steam pipe and a controlling valve therefor both inclosed by said float, and means for fixing the steam pipe in a predetermined variable position, substantially as described.

AUGUST J UNGER.

Witnesses:

CARL W. SoHMrrr,

MARIX I'Iii'lTIG. 

